Re: [CAD_CAM_EDM_DRO] Japan Servo info

I just got two surplus Japan Servo motors type DS57B40-
101. One has a

> "Diablo Spare Parts" tag on it. The motor includes an

encoder disk and

> a Sharp IC IR93403 decoder chip on an attached printed

There from a "old" Diablo Printer, Probably a daisy
wheel printer form the 70's & 80's. I don't know of
anyone with the data anymore.
Bill Higdon,
Yes I used to work on them

> I just got two surplus Japan Servo motors type DS57B40-101. One has a
> "Diablo Spare Parts" tag on it. The motor includes an encoder disk and
> a Sharp IC IR93403 decoder chip on an attached printed circuit board.
>
> I could find no information about this motor on the Japan Servo web
> site. Does anyone know anything about this device?
>
> The decoder PCB (Sharp GPIR26C) includes a small PCB about 3/16" x 1
> 1/4" with what appear to be laser trimmed resistors identified as VR1
> to VR5. One of these PCB's is broken of right through oner ogf the
> resistors. Any ideas about finding a replacement or a fix?
>
> There are 5 leads to the decoder PCB: Vcc, G, A, B and Vee. What might
> these be (other than supply voltage and ground)? (A Google search
> found nothing on the Sharp chip).
>
> Grant
>
>
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